[Bug c++/119024] New: Problem of structured binding and maybe gcc 10 accepts invalid

[qurong at ios dot ac.cn via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=119024

            Bug ID: 119024
           Summary: Problem of structured binding and maybe gcc 10 accepts
                    invalid
           Product: gcc
           Version: 10.1.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: qurong at ios dot ac.cn
  Target Milestone: ---

For this program:


void f() {
    int arr[1] = { 1 };
    struct A {
    };
    auto[A] = arr;
    auto[B] = arr;
    struct B {
    };

}
int main() {
    f();
    return 0;
}


This causes an error in clang and gcc≥11, but msvc and gcc10 didn't report the
error. 

Compiler Explorer link: https://godbolt.org/z/9haa76qKG